Question: What is the moon of Neptune?
Paraphrase: What is the moon of Neptune?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P397 wd:Q332 . ?sbj wdt:P31 wd:Q2139 } 
Answer: Triton, Naiad, Nereid, Proteus, Thalassa, Despina, Galatea, Larissa, Halimede, Sao, Laomedeia, Psamathe, Neso